Brassica plate strip detection device

Abstract

The invention relates to the technical field of workpiece detection, in particular to a brass plate strip detection device which comprises a detection machine body, the side portion of the detection machine body is fixedly connected with at least two fixed clamps used for clamping one end of a sample, the detection machine body is slidably connected with a sliding block, and the sliding block is provided with movable clamps which are symmetrically arranged. The sliding block is in threaded connection with a threaded rod, the threaded rod is rotationally connected with the detection machine body, a carving brush is arranged over the movable clamp, and the upper portion of the detection machine body is fixedly connected with a graduated scale. Samples are pulled through the two fixing clamps, stretching detection can be conducted on the two samples at the same time, when one sample is broken, through upward movement of a contact wheel and cooperation of a lifting frame, a lifting frame, a T-shaped plate and the like, a carving pen moves upwards to mark on a graduated scale, and the position of breakage can be automatically marked.

Description

Technical Field

[0001] This invention relates to the field of workpiece inspection technology, and in particular to a brass sheet and strip inspection device. Background Technology

[0002] After brass strips are produced, they generally undergo quality inspection, which involves testing various properties of the brass strips, including hardness testing, non-destructive testing, and tensile testing. The purpose of tensile testing is to ensure the reliability and safety of the brass strips in practical applications.

[0003] Currently, tensile testing of brass strips is usually performed through a tensile test. This test measures mechanical properties such as tensile strength, yield strength, and elongation. The tensile test typically uses a tensile testing machine. A sample of brass strip of a certain length is taken out, one end of which is fixed to a fixed fixture, and the other end to a moving fixture. The moving fixture is then electrically controlled to move horizontally, stretching the brass strip. If the brass strip does not break when stretched to a certain length, it is considered a qualified product. If it breaks during the stretching process, it is considered a defective product.

[0004] However, current tensile testing machines can only test one sample at a time, making it impossible to test multiple brass strips at once. Moreover, when a defective product breaks during the tensile test, it is necessary to use a ruler to measure and record the length of the break, which is very troublesome. Therefore, a brass strip testing device is now being developed. Summary of the Invention

[0005] The technical solution is as follows: A brass strip testing device includes a testing body, at least two fixed clamps for holding one end of a sample are fixedly connected to the side of the testing body, a sliding block is slidably connected to the testing body, a symmetrically arranged movable clamp is provided on the sliding block, the movable clamp is used to hold the other end of the sample, a threaded rod is threadedly connected to the sliding block, the threaded rod is rotatably connected to the testing body, a marking pen is provided directly above the movable clamp, and a scale is fixedly connected to the upper part of the testing body.

[0006] As an improvement to the above solution, it also includes a first spring, one end of which is connected to the sliding block. A lifting frame is fixedly connected to the bottom of the first spring. The lifting frame is slidably connected to the sliding block. A lifting frame is slidably connected to the side of the sliding block near the engraving pen. The lifting frame is connected to the engraving pen. A T-shaped plate is fixedly connected to the side of the lifting frame near the first spring. A contact wheel is set on the lifting frame near the sample position.

[0007] As an improvement to the above solution, a jacking frame is provided on the side of the lifting frame away from the contact wheel. The jacking frame and the lifting frame are slidably connected. The top of the jacking frame and the T-shaped plate are pressed together. A first wedge block is fixedly connected to the side of the T-shaped plate away from the lifting frame. A second wedge block is fixedly connected to the lifting frame and symmetrically arranged. The second wedge block and the first wedge block are pressed together. A second spring is connected between the lifting frame and the sliding block. A third spring is connected between the jacking frame and the lifting frame.

[0008] As an improvement to the above solution, a servo motor is also included. The servo motor is located on the side of the detection body away from the fixed fixture, and the worm gear is connected to the threaded rod on the side away from the moving fixture. The worm gear meshes with the worm, and the worm is driven by the servo motor.

[0009] As an improvement to the above solution, it also includes a cross, which is fixedly connected to the end of the output shaft of the servo motor. The worm gear has a cross-shaped protrusion on the side near the cross, and the cross-shaped protrusion and the worm gear are slidably connected. The cross-shaped protrusion and the cross engage. The cross-shaped protrusion has a movable frame, which is rotatably connected to the cross-shaped protrusion. The push frame is sleeved on the outside of the worm gear, and the movable frame is slidably connected to the detection body. A fourth spring is connected between the movable frame and the detection body.

[0010] As an improvement to the above solution, a U-shaped plate is also included, which is fixed to the lower jacking frame, while the L-shaped plate is fixedly connected to the upper jacking frame.

[0011] As an improvement to the above solution, a one-way rotating plate is also included. The one-way rotating plate is rotatably connected to the U-shaped plate and the L-shaped plate. The U-shaped plate and the L-shaped plate abut against the bottom of the one-way rotating plate. The top of the one-way rotating plate and the bottom of the moving frame are pressed together. Torsion springs are connected to the U-shaped plate and the L-shaped plate. The torsion springs are connected to the one-way rotating plate.

[0012] As an improvement to the above solution, it also includes a squeezing wheel, which is rotatably connected to the lifting frame on the side near the contact wheel. A wedge plate is set on the side of the detection machine body near the squeezing wheel, and the wedge plate and the squeezing wheel squeeze together.

[0013] As an improvement to the above solution, a timer is also included. The timer is set on the side of the detection body near the servo motor. A contact switch is set in the middle of the timer. The contact switch and the sliding block are in a pressing fit. The contact switch and the servo motor are electrically connected through the control module. A first timing button is set on the upper part of the timer. A second timing button is set on the lower part of the timer. A pressing rod is set on the side of the lifting frame near the timer. The pressing rod and the timing button are in a pressing fit.

[0014] The present invention has the following advantages: The present invention uses two fixed clamps to pull the sample, enabling simultaneous tensile testing of two samples. When one sample breaks, the contact wheel moves upward, and with the cooperation of the lifting frame, the lifting frame, and the T-shaped plate, the marking pen moves upward to mark the scale, automatically marking the breakage location and recording the test data. After the marking pen marks the sample, the pen immediately descends due to the cooperation between the first and second wedge blocks. Before the marking pen moves upward, the cross and the cross-shaped protrusion disengage through the cooperation between the unidirectional rotating plate and the moving frame, causing the moving clamp and the marking pen to automatically stop. This allows the marking pen to be stopped immediately when the sample breaks, and then the marking pen moves upward to mark the breakage location. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural cross-sectional view of the first part of the present invention.

[0017] Figure 3 This is a three-dimensional structural cross-sectional view of the second part of the present invention.

[0018] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0019] Figure 5 This is a three-dimensional structural diagram of the L-shaped plate, unidirectional rotating plate, and torsion spring components of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the servo motor, cross, and cross-shaped protrusion plate of the present invention.

[0021] The labels in the diagram are as follows: 1. Detection body, 2. Fixed fixture, 3. Moving fixture, 4. Sliding block, 5. Sample, 6. Threaded rod, 7. Marking pen, 8. Ruler, 9. First spring, 10. Lifting frame, 11. Lifting frame, 12. T-shaped plate, 13. Contact wheel, 14. Pushing frame, 15. First wedge block, 16. Second wedge block, 17. Second spring, 18. Third spring, 19. Worm gear, 20. Worm, 21. Servo motor, 22. Cross, 23. Cross protrusion plate, 24. Moving frame, 25. Fourth spring, 26. U-shaped plate, 27. L-shaped plate, 28. One-way rotating plate, 29. Torsion spring, 30. Extrusion wheel, 31. Wedge plate, 32. Timer, 33. Contact switch, 34. First timing button, 35. Second timing button, 36. Extrusion rod. Detailed Implementation

[0022] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0023] A brass strip testing device, such as Figure 1 As shown, it includes a detection body 1, at least two fixed clamps 2 for holding one end of a sample 5 are fixedly connected to the side of the detection body 1, a sliding block 4 is slidably connected to the detection body 1, and a symmetrically arranged movable clamp 3 is provided on the sliding block 4 for holding the other end of the sample 5. A threaded rod 6 is threadedly connected to the sliding block 4, and the threaded rod 6 is rotatably connected to the detection body 1.

[0024] Rotating the threaded rod 6 can drive the sliding block 4 to move away from the fixed clamp 2, so that the left end of the sample 5 can be subjected to a tensile test. If the sample 5 does not break when the fixed clamp 2 moves to the far left, it means that the sample 5 is qualified. If the sample 5 breaks in the middle, it means that the sample 5 is unqualified.

[0025] As described in the background art, after a defective product breaks during stretching, it is necessary to use a ruler to measure and record the length of the break so that the sample 5 can be upgraded according to the length of the break. This is very troublesome. Therefore, in this embodiment, a marking pen 7 is set directly above the moving clamp 3, and a scale 8 is fixedly connected to the upper part of the detection body 1. When one of the samples 5 breaks, a force will push the marking pen 7 to move up quickly and mark a mark on the scale 8. In this way, the stretching length of the defective product can be automatically recorded.

[0026] The power comes from an elastic element, which is a first spring 9. One end of the first spring 9 is connected to the sliding block 4. A lifting frame 10 is fixedly connected to the bottom of the first spring 9. The number of lifting frames 10 is the same as that of the moving clamp 3. The lifting frames 10 are slidably connected to the sliding block 4. A lifting frame 11 is slidably connected to the side of the sliding block 4 near the engraving pen 7. The lifting frame 11 is connected to the engraving pen 7. A T-shaped plate 12 is fixedly connected to the side of the lifting frame 11 near the first spring 9.

[0027] Initially, the first spring 9 is stretched, and the lifting frame 10 is close to the bottom of the brass strip. When the moving fixture 3 moves to the left to stretch the sample 5, if one of the samples 5 breaks, the first spring 9 will drive the lifting frame 10 to rise. After the lifting frame 10 rises and contacts the T-shaped plate 12, it will push the T-shaped plate 12 to move upward. The upward movement of the T-shaped plate 12 will drive the lifting frame 11 to move upward. The upward movement of the lifting frame 11 will drive the marking pen 7 to move upward to mark the scale 8. In this way, when the sample 5 breaks, the marking pen 7 will quickly mark it, thus improving the accuracy of the detection.

[0028] With the lifting frame 10 in close contact with the bottom of the sample 5, it is easy for the lifting frame 10 to scratch the bottom of the sample 5 when the sample 5 is stretched. Therefore, as Figure 3 As shown, a contact wheel 13 is provided near the sample 5 on the lifting frame 10. The contact wheel 13 is rotatably connected to the lifting frame 10. The contact wheel 13 is in close contact with the bottom of the sample 5. The contact wheel 13 can reduce the friction between the lifting frame 10 and the sample 5.

[0029] Since the contact wheel 13 and the lifting frame 10 will remain in a raised state after sample 5 breaks, and the lifting frame 11 will also remain raised, the marking pen 7 will remain in an upward marking state. Therefore, when the moving fixture 3 continues to move to the left, the marking pen 7 will continue to mark on the scale 8. If another sample 5 also breaks during the stretching process, the marking pen 7 will not make a second marking. Therefore, the marking pen 7 needs to be lowered and reset immediately after marking. This embodiment adopts the following solution:

[0030] like Figure 4 As shown, a jacking frame 14 is provided on the side of the lifting frame 10 away from the contact wheel 13. The jacking frame 14 and the lifting frame 10 are slidably connected. The top of the jacking frame 14 is pressed and engaged with the T-shaped plate 12. A first wedge block 15 is fixedly connected to the side of the T-shaped plate 12 away from the lifting frame 10. A second wedge block 16 is fixedly connected to the lifting frame 11 and is symmetrically arranged. The second wedge block 16 and the first wedge block 15 are pressed and engaged.

[0031] When the lifting frame 10 rises, it drives the top-moving frame 14 and the first wedge block 15 to move upwards. The top-moving frame 14 first contacts the T-shaped plate 12 and lifts the T-shaped plate 12 upwards, thereby causing the marking pen 7 to move upwards for marking. Then, the top-moving frame 14 continues to drive the first wedge block 15 upwards. Afterwards, the first wedge block 15 contacts the second wedge block 16, causing the first wedge block 15 to move away from the moving clamp 3. The first wedge block 15 also drives the top-moving frame 14 to move away from the moving clamp 3. The lifting frame 14 will then detach from the T-shaped plate 12, thus the T-shaped plate 12 loses its upward pushing force. The T-shaped plate 12 will then descend and reset along with the lifting frame 11 and the engraving pen 7. In order to ensure that the lifting frame 11 can descend smoothly to its original position, a second spring 17 is connected between the lifting frame 11 and the sliding block 4. The second spring 17 will pull the lifting frame 11 and other components to descend to their original position. In this way, if another sample 5 breaks, the engraving pen 7 will be driven to rise and mark again in the same way as above, and then automatically descend.

[0032] After using this testing device, the lifting frame 10, contact wheel 13, and other components need to be pressed down to their initial state. When the jacking frame 14 and the first wedge block 15 descend, the jacking frame 14 needs to be moved forward to return to its initial rotational state. Figure 4 As shown, a third spring 18 connects the lifting frame 14 and the lifting frame 10. When the lifting frame 14 is pushed backward, the third spring 18 is compressed. When the first wedge block 15 descends and the second wedge block 16 disengages, the third spring 18 will keep the lifting frame 14 in a forward-pushing state, so that the lifting frame 14 remains in close contact with the rear of the T-shaped plate 12. When the lifting frame 14 has completely moved below the T-shaped plate 12, the third spring 18 will drive the lifting frame 14 to move forward and reset completely.

[0033] like Figure 2 As shown, the threaded rod 6 is driven by a servo motor 21, which is located on the side of the detection body 1 away from the fixed fixture 2. As explained above, when the marking pen 7 moves upward to mark, the sliding block 4 is still in a state where it drives the moving fixture 3 and the marking pen 7 to move to the left. This simultaneous upward and leftward movement of the marking pen 7 can cause marking deviations, potentially resulting in distance discrepancies and affecting detection accuracy. Therefore, this embodiment addresses this by immediately stopping the sliding block 4 when the sample 5 breaks. This ensures the marking pen 7 stops immediately. However, when the sliding block 4 stops, the servo motor 21 needs to be turned off. Turning off the servo motor 21 might cause the sliding block 4 to shift left or right due to various factors, affecting detection. Therefore, this embodiment employs a locking mechanism for the threaded rod 6. This prevents the sliding block 4 from shifting after the threaded rod 6 stops. Figure 6As shown, the threaded rod 6 is connected to the worm gear 19 on the side away from the moving clamp 3. The worm gear 19 meshes with the worm 20. The servo motor 21 provides power to the worm 20. After the servo motor 21 is turned on, the worm 20 will drive the worm gear 19 to rotate, thereby causing the threaded rod 6 to drive the sliding block 4 to move. The worm gear 19 and the worm 20 have a self-locking function, so the threaded rod 6 can be locked by itself.

[0034] Furthermore, considering that stopping the sliding block 4 requires turning off the servo motor 21, and then turning it back on after marking, this constant turning on and off could easily damage the servo motor 21 and is also cumbersome. Therefore, this embodiment adopts the following solution:

[0035] like Figure 6 As shown, the output shaft end of the servo motor 21 is fixedly connected to the cross 22. The worm gear 20 is provided with a cross convex plate 23 on the side near the cross 22. The cross convex plate 23 and the worm gear 20 are slidably connected. The cross convex plate 23 and the cross 22 are engaged. The cross convex plate 23 is provided with a movable frame 24. The movable frame 24 and the cross convex plate 23 are rotatably connected. The push frame 14 is sleeved on the outside of the worm gear 20. The movable frame 24 and the detection body 1 are slidably connected. A fourth spring 25 is connected between the movable frame 24 and the detection body 1.

[0036] When the sliding block 4 moves normally, the cross cam 23 and the cross 22 are engaged. When it is necessary to stop the sliding block 4, the pusher 14 is lifted by a drive component, the fourth spring 25 is compressed, and the pusher 14 moves upward, which will cause the cross cam 23 to move upward and separate from the cross 22. In this way, the output shaft of the servo motor 21 can no longer give power to the worm gear 20, so the threaded rod 6 will stop rotating. After that, after the marking is completed, the moving frame 24 is released, and the fourth spring 25 drives the moving frame 24 to automatically descend, so that the moving frame 24 drives the cross cam 23 to re-engage with the cross 22, so that the threaded rod 6 will continue to rotate.

[0037] like Figure 4 and Figure 5 As shown, the drive assembly includes a U-shaped plate 26, which is fixed to the lower push frame 14, and an L-shaped plate 27 is fixedly connected to the upper push frame 14. A one-way rotating plate 28 is rotatably connected to both the U-shaped plate 26 and the L-shaped plate 27. The bottom of the one-way rotating plate 28 is pressed against the U-shaped plate 26 and the L-shaped plate 27. The top of the one-way rotating plate 28 and the bottom of the moving frame 24 are pressed together. Torsion springs 29 are connected to the U-shaped plate 26 and the L-shaped plate 27. The torsion springs 29 are connected to the one-way rotating plate 28.

[0038] When the lifting frame 14 moves upward, it drives the U-shaped plate 26 and L-shaped plate 27 to move upward. The U-shaped plate 26 and L-shaped plate 27 then drive the one-way rotating plate 28 to move upward. The one-way rotating plate 28 automatically lifts the moving frame 24 upward, thereby automatically disengaging the cross 22 and the cross-shaped protrusion 23. After that, the engraving pen 7 moves upward to make marks. Then, after the first wedge block 15 and the second wedge block 16 are pressed together, the lifting frame 14 moves backward, driving the L-shaped plate 27 and the U-shaped plate 26 to move backward, which in turn causes the one-way rotating plate 28 to move backward. The movable frame 24 disengages from the movable frame 24, causing the movable frame 24 to move downwards to reset. When the top-moving frame 14 descends and separates from the T-shaped plate 12, the T-shaped plate 12 will drive the L-shaped plate 27 and U-shaped plate 26 to move forward, causing the one-way rotating plate 28 to also move forward. However, at this time, the one-way rotating plate 28 is located above the movable frame 24. When the one-way rotating plate 28 descends and contacts the movable frame 24, the one-way rotating plate 28 will swing upwards, and the torsion spring 29 will be twisted. Afterwards, the one-way rotating plate 28 moves to below the movable frame 24, and the torsion spring 29 drives the one-way rotating plate 28 to rotate and reset.

[0039] As explained earlier, when using this device again, the raised lifting frame 10 needs to be manually pressed down to reset so that the sample 5 can be properly secured. Therefore, if... Figure 1 As shown, a compression wheel 30 is rotatably connected to the lifting frame 10 near the contact wheel 13, and a wedge plate 31 is provided on the side of the testing machine body 1 near the compression wheel 30. The wedge plate 31 and the compression wheel 30 are in compression engagement.

[0040] When the lifting frame 10 moves to the right to reset, it will drive the compression wheel 30 to move to the right. After the compression wheel 30 contacts the wedge plate 31, it will be pushed downward by the wedge plate 31. The compression wheel 30 will then drive the lifting frame 10 and the contact wheel 13 to descend and reset again.

[0041] After sample 5 is stretched to the acceptable length, if it is necessary to test the tensile endurance of sample 5, then the fixing clamp 2 must remain in the left-hand position, and the endurance time of sample 5 needs to be recorded. Therefore, as follows... Figure 2 As shown, in this scheme, a timer 32 is set on the side of the detection body 1 near the servo motor 21. A contact switch 33 is set in the middle of the timer 32. The contact switch 33 and the sliding block 4 are in a pressing fit. The contact switch 33 and the servo motor 21 are electrically connected through the control module. A first timing button 34 is set on the upper part of the timer 32. A second timing button 35 is set on the lower part of the timer 32. A pressing rod 36 is set on the side of the lifting frame 10 near the timer 32. The pressing rod 36 and the timing button are in a pressing fit.

[0042] When the sliding block 4 moves to the left, it causes the extrusion rod 36 to move to the left. When the sliding block 4 contacts the contact switch 33, the timer 32 starts timing, and the servo motor 21 stops working. At this time, the extrusion rods 36 are located below the timing buttons. If one of the samples 5 breaks, the lifting frame 10 will rise, and the lifting frame 10 will drive the corresponding extrusion rod 36 to move up and extrude the nearby timing button. After the timing button is pressed, the timer 32 will start recording a time. In this way, the tensile endurance time of sample 5 can be automatically recorded.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A brass strip testing device, comprising a testing body (1), at least two fixed clamps (2) for holding one end of a sample (5) are fixedly connected to the side of the testing body (1), a sliding block (4) is slidably connected to the testing body (1), and symmetrically arranged movable clamps (3) are provided on the sliding block (4) for holding the other end of the sample (5), and a threaded rod (6) is threadedly connected to the sliding block (4), the threaded rod (6) and the testing body (1) are rotatably connected, characterized in that, A marking pen (7) is set directly above the moving fixture (3), and a scale (8) is fixedly connected to the upper part of the testing body (1).

2. The brass strip detection device as described in claim 1, characterized in that, It also includes a first spring (9), one end of which is connected to the sliding block (4). The bottom of the first spring (9) is fixedly connected to a lifting frame (10). The lifting frame (10) is slidably connected to the sliding block (4). The sliding block (4) is slidably connected to a lifting frame (11) on the side near the engraving pen (7). The lifting frame (11) is connected to the engraving pen (7). The side of the lifting frame (11) near the first spring (9) is fixedly connected to a T-shaped plate (12). A contact wheel (13) is set on the lifting frame (10) near the sample (5).

3. The brass strip detection device as described in claim 2, characterized in that, A lifting frame (14) is provided on the side away from the contact wheel (13) of the lifting frame (10). The lifting frame (14) and the lifting frame (10) are slidably connected. The top of the lifting frame (14) and the T-shaped plate (12) are pressed together. A first wedge block (15) is fixedly connected on the side of the T-shaped plate (12) away from the lifting frame (10). A second wedge block (16) is fixedly connected on the lifting frame (11). The second wedge block (16) and the first wedge block (15) are pressed together. A second spring (17) is connected between the lifting frame (11) and the sliding block (4). A third spring (18) is connected between the lifting frame (14) and the lifting frame (10).

4. The brass strip detection device as described in claim 3, characterized in that, It also includes a servo motor (21), which is located on the side of the detection body (1) away from the fixed fixture (2). A worm gear (19) is connected to the threaded rod (6) on the side away from the moving fixture (3). The worm gear (19) meshes with the worm (20), which is driven by the servo motor (21).

5. The brass strip detection device as described in claim 4, characterized in that, It also includes a cross (22), which is fixedly connected to the output shaft end of the servo motor (21). The worm (20) has a cross protrusion (23) on the side near the cross (22). The cross protrusion (23) and the worm (20) are slidably connected. The cross protrusion (23) and the cross (22) are engaged. The cross protrusion (23) is provided with a moving frame (24). The moving frame (24) and the cross protrusion (23) are rotatably connected. The top moving frame (14) is sleeved on the outside of the worm (20). The moving frame (24) and the detection body (1) are slidably connected. A fourth spring (25) is connected between the moving frame (24) and the detection body (1).

6. The brass strip detection device as described in claim 5, characterized in that, It also includes a U-shaped plate (26), which is fixed on the lower jacking frame (14), and an L-shaped plate (27) which is fixedly connected to the upper jacking frame (14).

7. The brass strip detection device as described in claim 6, characterized in that, It also includes a one-way rotating plate (28), which is rotatably connected to the U-shaped plate (26) and the L-shaped plate (27). The U-shaped plate (26) and the L-shaped plate (27) press against the bottom of the one-way rotating plate (28). The top of the one-way rotating plate (28) and the bottom of the moving frame (24) are pressed together. Torque springs (29) are connected to the U-shaped plate (26) and the L-shaped plate (27). Torque springs (29) are connected to the one-way rotating plate (28).

8. The brass strip detection device as described in claim 7, characterized in that, It also includes a squeezing wheel (30), which is rotatably connected to the lifting frame (10) on the side near the contact wheel (13). A wedge plate (31) is provided on the side of the testing body (1) near the squeezing wheel (30), and the wedge plate (31) and the squeezing wheel (30) are squeezed together.

9. The brass strip detection device as described in claim 8, characterized in that, It also includes a timer (32), which is set on the side of the detection body (1) near the servo motor (21). A contact switch (33) is set in the middle of the timer (32). The contact switch (33) and the sliding block (4) are pressed together. The contact switch (33) and the servo motor (21) are electrically connected through the control module. A first timing button (34) is set on the upper part of the timer (32), and a second timing button (35) is set on the lower part of the timer (32). A pressing rod (36) is set on the side of the lifting frame (10) near the timer (32). The pressing rod (36) and the timing button are pressed together.

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